F4: Failure of Success Criterion 2.2.2 due to using text-decoration:blink without a
mechanism to stop it in less than five seconds

Applicability

User Agent and Assistive Technology Support Notes

The blink value of the text-decoration property
is not supported by Internet Explorer. It is supported in
Netscape/Mozilla family browsers. Not tested in others (e.g., Safari,
Opera).

Description

CSS defines the blink value for the text-decoration
property. When used, it causes any text in elements with this property to
blink at a predetermined rate. This cannot be interrupted by the user, nor
can it be disabled as a user agent preference. The blinking continues as
long as the page is displayed. Therefore, content that uses
text-decoration:blink fails the Success Criterion because
blinking can continue for more than three seconds.

Examples

Failure Example 1

A product list page uses the text-decoration:blink style
on an element to draw attention to sale prices. This fails the
Success Criterion because users cannot control the blink.